CN107848089A - Turntable for lathe - Google Patents
Turntable for lathe Download PDFInfo
- Publication number
- CN107848089A CN107848089A CN201680039495.6A CN201680039495A CN107848089A CN 107848089 A CN107848089 A CN 107848089A CN 201680039495 A CN201680039495 A CN 201680039495A CN 107848089 A CN107848089 A CN 107848089A
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- China
- Prior art keywords
- cooling
- rotary table
- unit
- rotor
- clutch shaft
- Prior art date
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23Q—DETAILS, COMPONENTS, OR ACCESSORIES FOR MACHINE TOOLS, e.g. ARRANGEMENTS FOR COPYING OR CONTROLLING; MACHINE TOOLS IN GENERAL CHARACTERISED BY THE CONSTRUCTION OF PARTICULAR DETAILS OR COMPONENTS; COMBINATIONS OR ASSOCIATIONS OF METAL-WORKING MACHINES, NOT DIRECTED TO A PARTICULAR RESULT
- B23Q11/00—Accessories fitted to machine tools for keeping tools or parts of the machine in good working condition or for cooling work; Safety devices specially combined with or arranged in, or specially adapted for use in connection with, machine tools
- B23Q11/12—Arrangements for cooling or lubricating parts of the machine
- B23Q11/126—Arrangements for cooling or lubricating parts of the machine for cooling only
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23Q—DETAILS, COMPONENTS, OR ACCESSORIES FOR MACHINE TOOLS, e.g. ARRANGEMENTS FOR COPYING OR CONTROLLING; MACHINE TOOLS IN GENERAL CHARACTERISED BY THE CONSTRUCTION OF PARTICULAR DETAILS OR COMPONENTS; COMBINATIONS OR ASSOCIATIONS OF METAL-WORKING MACHINES, NOT DIRECTED TO A PARTICULAR RESULT
- B23Q2220/00—Machine tool components
- B23Q2220/004—Rotary tables
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Machine Tool Units (AREA)
Abstract
Propose a kind of turntable (1) for lathe, it is provided with stator unit (7) and the rotor unit (5) that can be rotated at least about rotation axis (R), wherein, rotor unit (5) includes at least one receiving unit (2) for receiving workpiece, wherein clutch shaft bearing unit (8 is provided with stator unit (7), 9) for the installation of rotor unit (5), wherein, motorized motions of the electromagnetic motor driver device (3) for rotor unit (5) are set, the turntable (1) is met on high rotation speed and simultaneously on high rigidity and the requirements at the higher level of precision, and therefore it is especially in use in turning and is used to be general in terms of milling and show good performance simultaneously.According to the present invention, this is by making rotor unit (5) have at least one rotor cooling device (14 19) including cooling medium and at least one cooling surface at least in the region of motor driver (3) and/or clutch shaft bearing unit (8,9) for the used heat for coming from motor driver (3) and/or clutch shaft bearing unit (8,9) is cooled down and/or absorbed to obtain.
Description
The present invention relates to a kind of rotary table for lathe, wherein, preamble according to claim 1, there is provided
A kind of stator unit and the rotor unit that can be rotated at least about rotation axis.
Prior art
The function of lathe forms the part geometry of workpiece it is generally preferred to be used for using mechanical manufacturing technology, wherein,
Considered critical is carried out to part geometry in terms of shape, positions and dimensions.Herein, the requirement for accuracy becomes
More and more higher, wherein, 1 percent are not only needed, and at least partially or even require the precision of one thousandth millimeter.
Rotary table be lathe a part, by Workpiece clamping on rotary table for machining.This time
Revolving worktable, can be by rotating disk or indexing with vertical rotation axis or in some applications with horizontal rotation axis
Disk or work stage rotate together with the workpiece of clamping around the rotation axis, to allow in various positions or the work in rotation
The enterprising row metal cutting operation of part.Therefore, rotary table can be used for turning or milling.
According to applicable cases, by the servomotor with transmission device or the generally also direct driver with torque motor
As driver.
In metal cutting, in nearest decades, precision and rigidity and maximum possible on rotary table rotate
The requirement of speed has become more and more higher.Therefore, according to applicable cases, for turning, rotary table is set at present
Count into of a relatively high rotary speed, it is typically larger than per minute 1000 turns, or on the other hand, for milling, will turn round
Table design is into high rigidity.
Higher rotary speed also results in thermic load bigger on corresponding component, and thus cause bigger heat should
Power, thermal stress can produce unfavorable deformation/change for achievable precision in machining.It reduce rotary table
Applicability for turning.
Objects and advantages of the present invention
By contrast, it is an object of the invention to propose a kind of rotary table for lathe, the rotary table is expired
Foot is on high rotation speed and simultaneously on high rigidity or the requirements at the higher level of precision, and therefore, especially, the revolution work
Make platform for turning while being general in terms of for milling or showing good performance.
The rotary table of the type illustrated since introduction, the purpose is realized by the feature of claim 1.It is logical
After measure illustrated in the dependent claims, advantageous embodiment of the invention and improvement are possible.
Therefore, it is characterised by according to the rotary table of the present invention, is located at least in motor driver and/or clutch shaft bearing
Rotor unit in the region of unit has at least one rotor cooling device, and the rotor cooling device is including cooling medium and extremely
A few cooling surface, for the used heat for coming from motor driver and/or clutch shaft bearing unit is cooled down and/or inhaled
Receive.Therefore, the rotor cooling device is configured to (inside) cooling devcie of motor of motor driver and/or is configured to bearing cooling
Device.
This " inside " of the mounting seat of rotor unit or rotor, particularly motor driver and/or rotary table is cold
But so that rotary table has long working life and favourable temperature adjustment, and high machining essence can therefore be brought
Degree." inside " cooling of the inside race of mounting seat or mounting seat is additionally, since, higher rotary speed can also be realized.Therefore,
The dissipation heat of mounting seat is able to advantageously remove or cool down, so as to be effectively prevented from the unfavorable high temperature peak of mounting seat.
In the prior art, in practice, only stator case and it is appropriate in the case of bearing mounting base outer race
" outside " cooling have been realized in decades so far.By means of the invention of motor core and/or bearing mounting base or inside race
" internal cooling " of property, can obtain the cooling of rotary table or significantly improving and therefore obtaining significantly higher for temperature adjustment
Machining accuracy.Especially in the case where being combined with " the outside cooling " of stator or subelement, hereafter it can realize
To almost comprehensive or complete cooling/temperature adjustment of whole rotary table.
Thermal deformation (the especially thermal deformation of platen) is the main interference factors in machining, and the thermal deformation does not have at them
There is the sizable geometric error that may result in when being compensated on workpiece/part to be manufactured.These deformation especially because
The heating of the different zones of rotary table during operation and occur, and the cause of this heating is typically rotary table
Interior far different source of power loss.
In addition to the mounting seat of rotor unit, the important sources of power attenuation are the electricity in direct drive rotary table
Dynamic driver or motor driver.The energy that monoblock type motor driver (i.e. motor) provides electric power is converted into useful energy
Amount, but the energy of loss also can be always converted into a certain extent.Due to modern rotary table driver portion
With sizable electric power, therefore these losses are partly and sizable.
Advantageously, there is provided at least second bearing unit for rotor unit installation, wherein, in clutch shaft bearing unit
Gap is provided between second bearing unit.By means of the two independent bearing units spaced apart, can absorb especially
High tilt torque simultaneously ensures the high machining accuracy of turning and milling.The two independent bearing units are in revolution work
The favourable positioning of the opening position of two appropriate intervals has the effect that inside platform, it is possible to achieve high rigidity or effectively anti-non-return
The inclination of revolving worktable or rotation axis or rotating disk/index dial.
In the favourable variant of the present invention, at least it is provided with least between clutch shaft bearing unit and second bearing unit
Bearing cooler, the bearing cooler include at least one cooling surface and cooling medium for cooling down and/or absorbing
Come from the used heat of clutch shaft bearing unit and second bearing unit.It hereby is obtained that, comes from clutch shaft bearing unit and/or
Harmful used heat of two bearing units will not cause unfavorable stress at least one in the two bearing units or damage.
Preferably, rotor cooling device or bearing cooler have at least one circulating line, and the circulating line is substantially
Extend the distribution and/or collection for cooling medium in whole circumference, especially, in the axial direction along rotation axis
Observation is observed transverse to rotation axis in radial directions, and circulating line is arranged in clutch shaft bearing unit and second bearing unit
Between.Thus achieve (special to the inside of rotor unit or core and/or clutch shaft bearing unit and/or second bearing unit
The inside race of clutch shaft bearing unit and/or second bearing unit) complete cooling or temperature adjustment.Especially with " outside "
Housing is cooled down (i.e. especially to the cold of the corresponding outer race of stator unit and/or clutch shaft bearing unit and/or second bearing unit
But in the case of) combining, this achieve particularly to the favourable uniform cold of clutch shaft bearing unit and/or second bearing unit
But/temperature adjustment.Unfavorable thermal stress or load is it is possible thereby to be avoided effectively and widely or weaken.This makes according to this hair
Bright rotary table has extra high achievable machining accuracy.
In the favourable variant of the present invention, rotor or bearing cooler include surface and expand cooling structure.These tables
Face enlarged configuration or surface, which expand, ensure that by cooling down or thermally contacting the more preferable geothermal transfer in surface.
In a preferred embodiment of the invention, there is provided multiple cooling pipes and/or cooling element, cooling pipe and/or
Cooling element has at least one cooling surface respectively and distribution/arrangement is circumferentially at least in part.Preferably, cooling tube
Road and/or cooling element (such as cooling pipe and/or cooling element are the preferably approximately 6-10 member/tube between 3 to 15
Road) almost uniformly and/or it is arranged symmetrically relative to the section of rotary table or the section of rotor unit, preferably it is distributed in
In whole circumference.Thus it is preferred to cooled down in addition by means of the substantially comprehensive stator cooling of outside and/or stator case, can be with
Realize that the favourable surface of active cooling or heat-exchanger surface expands, and can realize in addition (especially stator unit or
Whole rotary table) special uniformly and extensive cooling/temperature adjustment.
Advantageously, cooling pipe and/or cooling element have the part of at least one substantially radial orientation respectively.Thus,
Favourable distribution of the cooling medium in radially spaced region/position of rotor unit can be completed.Thus, for example at the two
Clutch shaft bearing unit and second bearing unit radial are spaced apart or with the case of different major diameters, it is possible to achieve to this two
The cooling of the intermediate region therebetween of individual bearing unit and/or rotor unit.This intermediate region is alternatively or separately
Other places can also use to be cooled down according to the circulating line of the present invention.(inside) that these measures improve rotor unit is cold
But.
It is in a special improvement, the part of cooling pipe and the approximately radial orientation of/cooling element is substantially vertical
Arrange and/or be arranged on a plane or flat surface in rotation axis.Therefore, cooling pipe and/or cooling element exist
In star and being radially disposed in this plane, wherein, the rotation axis of rotor unit is configured to the surface normal of this plane.
The part preferably radially oriented of cooling pipe and/or cooling element is advantageously arranged to not deposit substantially on the direction of rotation axis
Offseting, and especially, skew is being substantially not present on direction vertical with rotation axis/orthogonal.
Primary Study it has been shown that it is possible thereby to realize especially uniform radial direction cooling, so as to realize rotor unit or
The position of rotation axis only very small or the unfavorable thermal change that there's almost no.
In an advantageous embodiment, the part of the approximately radial orientation of cooling pipe and/or cooling element is arranged in first
Between circulating line and the second circulating line, first annular pipeline is configured to distribute circulating line for cooling medium is distributed
Into these parts, the second circulating line is configured to collect circulating line for collecting cooling medium from these parts.By
This, it is possible to achieve the particularly advantageous cooling of rotor unit.Therefore, it is particularly possible to effectively avoid or reduce on longitudinal axis direction
Temperature undesirable change.
Generally, according to the present invention it is possible to obtain/realize rotary table (particularly rotor unit) in a circumferential direction
Uniform temperature.This is particularly by the cooling for distributing the radial directed of circulating line with collection circulating line and therebetween
The combination of pipeline ensures to advantageously result in.Herein, circulating line realizes uniform temperature distribution in a circumferential direction,
Wherein, approximately along the cooling pipe or cooling element of radial directed, the (aobvious of coolant temperature is caused due to heat absorption
Write) change.
Therefore, according to the present invention, in circumferencial direction without the temperature change/increase for occurring or obtaining correlation, and on the contrary
Substantially only occur in radial directions or obtain related temperature change/increase.This advantageously causes to avoid rotation axis
The undesirable change of orientation, and hence in so that the machining of the operation of workpiece or lathe has extra high quality.
Advantageously, at least one in cooling pipe and/or cooling element have at least one pressure control valve with
In at least in cooling pipe/cooling element internal control or the pressure of regulation cooling medium.Preferably, each cooling pipe and/
Each cooling element has single pressure control valve respectively.Thus, it is possible to obtain to (difference) cooling pipe and/or cooling
The pressure of element and the favourable control or regulation of flow, to realize as much as possible respectively by all cooling pipes/cooling member
The almost equal flow of part or equal volumetric flow rate, and therefore realize the equal cold of all cooling pipe/cooling elements
But ability.
For example, it is passed through unit (such as rotation feedthrough component feedthrough component and/or fluid line/flexible pipe) in feed line or flowing
With relatively small section and cooling pipe/cooling element with relatively large flow section in the case of, especially
In the case where the total cross section that cooling pipe or cooling element have is more than feed line or flowing is passed through the total cross section of unit, this
It is very favorable.The relatively large flow section of cooling pipe/cooling element form relatively large heat exchanger or
Cooling surface, this is particularly advantageous.
Similarly, due to fine difference or tolerance based on production, otherwise during operation in each cooling pipe
The slightly different flow velocity or flow of cooling medium can occur, and therefore bring slightly different cooling capacity, this can cause
Some deficiencies in cooling, and therefore cause different thermal expansion/thermal stress.Correspondingly, cooling pipe and/or cooling member are passed through
One or more favourable pressure control valves of part efficiently avoid uneven cooling capacity or thermal stress.It is contemplated that
, the independent activation or control of pressure control valve are accomplished.Therefore, it is single by means of corresponding pressure control valve
Flow velocity in cooling pipe can be individually real to be able to respectively by favourable (electric/electronics) control unit respectively
It is existing.
For example, pressure control valve is configured to valve and/or is configured to current limiter/nozzle and/or is configured with inside
Flow duct or the stud screw in hole.This hole of the stud screw or corresponding flow duct can be with separately fabricated and have
There is high precision, to be obtained in a manner of special economical and efficient by each essence in these stud screw/current limiters
The fixed through-flow or flow of fidelity.Corresponding stud screw can be advantageously solid by the internal thread of cooling pipe/cooling element
Fixed or arrangement.
Preferably, cooling pipe has larger diameter, and therefore has relatively large cooling surface, to realize
Favourable cooling.Advantageously, pressure control valve or nozzle/current limiter and/or the porose stud screw of tool are arranged in phase
The end of cooling pipe or cooling element is answered, or is arranged in the end of cooling pipe.In cooling pipe/cooling element,
Thus " accumulation " of flowing cooling medium is produced, to ensure uniformly in whole cooling duct or cooling element during causing operation
Pressure.
Preferably, multiple cooling pipes and/or cooling element are arranged in by first annular pipeline and second according to the present invention
Between circulating line.Advantageously, first annular pipeline is it is possible thereby to which be configured to distribute circulating line and the second circulating line can
To be configured to collect circulating line.Cooling unit has one or two or only several supply line/elements and only one
Or two or only several flowing lines or outflow element, by means of cooling unit favourable by this way, such as turn round work
The favourable recycling of cooling medium of rotor unit made in platform or flow through rotary table can be accomplished.Thus, it is possible to
To given or restriction cooling circuit.
The restriction loop of cooling medium or cooling fluid can realize restriction, as best as possible heat transfer/release, its
In, it is advantageously possible to by cooling fluid or at least one/one or more of cooling medium guiding/guiding to rotary table
The point of restriction or region, to absorb heat herein and direct it to external heat exchanger/cooler in due course.It is excellent
The restriction cooling circuit of selection of land, cooling medium or fluid coolant has at least one pressing creation unit or circulating pump etc., and/
Or media reservoir (such as equalizing tank).
Advantageously, one or more rotation feedthrough components are set for one or more different fluids (such as cooling medium
And/or for by Workpiece clamping or the fixation being fixed on platen/clamping medium, particularly can gas-pressurized or compressed air
And/or hydraulic oil) supply and/or removal.
The use of the bearing unit independent on two, it is to be noted however that it is possible thereby to complete clutch shaft bearing unit
On the absorption of radial load or radial load optimization and complete second bearing unit simultaneously on axial force or axial load
Optimization.According to the rotary table of the present invention it is ensured that high rigidity and being grasped particularly suitable for turning operation and milling
Make.
According to the present invention, rotary table especially can be configured to extra high rigidity in milling or absorb relatively
High torque, to obtain high quality in the milling of workpiece.Meanwhile can be advantageously according to the rotary table of the present invention
Operated under of a relatively high rotary speed (being greater than 1000r.p.m, or even greater than 2000r.p.m), so as to especially
It is that high quality is also obtained in turning.
By contrast, in decades in the prior art, single bearing unit or single axial direction-radial axle have only been used
Hold, i.e., especially there is single inside race, because systematically always can be used for these portions with seldom in rotary table
Part and the installing space for being used especially for mounting seat.But this or single bearing unit of rotary table are designed
Into/be dimensioned to be used for turning operation and milling machine operation, so that corresponding lathe is applied to turning and milling with only limiting to.
Therefore, it is of the invention that there are two independent bearing unit Advantageous variants to represent and tens of old standard practices
Mutually deviate from purposes, and on the contrary, used two independences or apart from one another by bearing unit with by rotary table with spy
Not favourable mode is configured for turning operation and milling machine operation, that is, ensures the high accuracy and high rigidity of rotary table
And high rotation speed ability.
In the implication of the present invention, rotary table is for example less than or equal to revolution work by the total length of rotary table
The outer dia of platform is defined.For example, rotary table has platen or rotating disk or index dial, its outer dia is more than back
The axial length of the axial length of revolving worktable housing, particularly greater than rotor unit.Equally, in the implication of the present invention,
In direct drive rotary table with torque motor, electromagnetic drive unit is configured so that (electromagnetism) stator or coil
(maximum) outer dia be more than (electromagnetism) stator or stator coil axial length.
Rotary table in the implication of the present invention advantageously has platen or rotating disk or an index dial, platen or rotating disk or divides
Scale has at least one fixed cell for being used to fix workpiece.Preferably, fixed cell is configured to clamp the folder of workpiece
Tight unit, wherein, it achieve particularly pneumatic and/or hydraulic pressure fixation/clamping.
In addition, the rotary table in implication of the present invention has unilateral mounting seat or bearing unit, unilateral mounting seat or axle
Bearing unit is arranged between platen or rotating disk or index dial and drive system (particularly direct driver or torque motor).Favorably
Ground, it means that clutch shaft bearing unit and second bearing unit are all disposed within platen or rotating disk or index dial and drive system or electricity
Between magnet rotor and stator (i.e. torque motor).
Correspondingly, the rotary table that only one side supports, the revolution particularly with direct driver or torque motor
Workbench can have the rotation axis vertically or horizontally oriented during operation or machining.Especially revolved with level
In the embodiment of shaft axis, the not only weight of workpiece but also extraly solid rotary table or rotor list during machining
The weight of member can be acted on mounting seat or clutch shaft bearing and second bearing, and the weight of workpiece can reach such as hundreds of kilograms,
Or it can sometimes reach nearly 1000kg.Specifically, in the rotary table at least once in a while with horizontal axis of rotation type
In, two it is independent, apart from one another by bearing unit creative construction be particularly advantageous and even in this machinery plus
Station puts the high rigidity or precision that also ensure that rotary table.
Preferably, rotary table is configured to rotate circular table, wherein, the rotary table has at least one rotation
Shaft axis, the rotation axis generally horizontal orientation of the rotation axis and the rotor unit of the rotary table and/or orthogonal or vertical
Directly.This rotation axis is also referred to as so-called A axis, and the rotation axis of rotor unit is also referred to as so-called C axis.
The horizontally and vertically position of rotation axis and/or platen is therefore can be positioned at according to the favourable rotary table of the present invention.
In appropriate circumstances, workpiece is possibly even rotated into 180 ° of processing or upside down processed.
Advantageously, rotation circular table has at least one (preferably two) support arm or turning arm, support arm or rotation
Pivoted arm such as (difference) has direct driver or torque motor, for around rotation axis or the rotation of so-called A axis.
In rotary table, this A axis can be arranged relative to perpendicular with 90 ° of angles and 45° angle.
Preferably, clutch shaft bearing unit is configured to axial thrust ball bearing and/or is configured to axial thrust roller bearing,
And/or second bearing unit is configured to cylinder roller bearing or taper roll bearing.In this case, such as clutch shaft bearing list
Member and second bearing unit can be implemented as single row bearings or double-row bearing, i.e., have on common inside race and/or outer race
There are one or more raceways to adjoin each other.Therefore advantageously make it that especially cylinder roller bearing or taper roll bearing can be with
Very high radial load or power are absorbed, and it is hereby ensured that the extra high radial direction of the rotary table according to the present invention is firm
Degree.The rotary table of this horizontal axis of rotation at least having once in a while is particularly advantageous, wherein especially sometimes
Heavy weight workpiece is accordingly radially acted in mounting seat.
In the special improvement of the present invention, observed in radial directions at least perpendicular to rotation axis, first
Formed with gap between bearing unit and second bearing unit.On the one hand, thus by closely or in a manner of section space-efficient obtain
Obtained the installation with two independent bearing units.On the other hand, therefore bearing for rotary table or platen can be obtained
The very grade resistance of top load.For example, using this measure, two independent bearing units can be placed close to torque
Motor or electromagnetism Direct Driving System, and/or close to platen or rotating disk or index dial.
It is thereby achieved that the especially small axial direction of rotary table or rotary table housing and/or rotor unit is long
Degree, and therefore realize special " low " or the flat construction of the rotary table according to the present invention.This is particularly with revolution work
Use of the platform in modern machine (such as CNC boards etc.) is particularly advantageous.This allows for the relative of workpiece to be processed
Higher workpiece height or big size.Rotary table constructs lower in the axial direction, then workpiece to be processed can be with
Construct bigger/higher, and/or the support arm of rotation circular table or (vertical) installing space that can take up of turning arm get over
Greatly, with cause these then can with it is particularly stable ground or rigidly construct.
For example, clutch shaft bearing unit is arranged in the perimeter of rotary table and/or the stator close to rotary table
Housing, and/or second bearing unit are arranged in centre or the interior zone of rotary table.Therefore, can absorb especially high
Torque without causing the defects of related to machining.Equally, installed for " inside ", relatively small circumference can be obtained
Speed, less peripheral speed can cause the relatively side crops industry on the bearing, and partly cause the higher of rotor unit
Achievable rotary speed.
Advantageously, observed in the axial direction along rotation axis, clutch shaft bearing unit is arranged to and second bearing unit
It is overlapping at least in part.This means this axial space is negative, and/or two independent bearing units being spaced exist
It is arranged to be at least partially situated at identical " height " or position on axial direction.Thereby is achieved has two independent bearing lists
The particularly compact construction of the installation according to the present invention of member.
In the particular embodiment of the present invention, second bearing unit or circular cone or cylinder roller bearing have than first
The small outer dia of bearing unit, especially, clutch shaft bearing unit is configured to axial thrust ball bearing.It thus ensure that circular cone
Or cylinder ball bearing has relatively low peripheral speed due to its less diameter.This advantageously make rotary table or
Rotor unit can obtain of a relatively high rotary speed, and circular cone or cylinder roller bearing do not suffer from unfavorable load (i.e.
Particularly bigger heat accumulation).Because rotary table is obtained compared with Gao Xuan by means of the advantageous measures during operation
Rotary speed, it is possible to realize particularly advantageous turning operation.
Turning-milling working table can be advantageously configured to according to the rotary table of the present invention.That is, this is combined
High request on maximum possible rotary speed and on rigidity (particularly axially and radially rigidity/grade resistance).Therefore,
By means of the present invention, rotary table or lathe can extremely flexibly be used for turning operation and milling machine operation during operation.
Therefore, with needing specific rotary table to be used for the existing of high quality milling for high quality turning and specific rotary table
Technology is compared, and realizes the economical and efficient according to rotary table of the invention and particularly flexible use.
In principle, according to the present invention it is possible to complete to rotor unit and especially also cooled down to (inside) of stator unit/
Temperature adjustment, wherein, during or after the long-time operation of rotary table, effectively prevent or at least greatly reduce by
The undesirable change of rotation axis or so-called " inclination " caused by heat energy or thermal expansion.
Illustrative embodiment
The illustrative embodiment of the present invention is shown in the accompanying drawings and hereinafter with reference to accompanying drawing to illustrative embodiment
More specifical explanation is carried out.
More particularly：
Fig. 1 shows schematic first section of the rotary table of supply and the removal by the cooling medium with rotor
Face,
Fig. 2 shows schematic second section of the cooling distribution duct by the rotary table according to Fig. 1, and
Fig. 3 shows the schematic cross-section oriented perpendicular to rotation axis by the rotary table according to Fig. 1.
In fig. 1 and 2, it is schematically shown that rotary table 1, rotary table 1 have rotary table housing
20 and for fixed either for clamping the platen 2 or rotating disk or index dial 2 of workpiece (not shown in detail), with lathe
Cut for machine.The fixation or clamping of workpiece can realize in known manner, for example, with so-called scroll chuck or
Analog is realized.Therefore, rotary table 1 or platen 2 can have (not shown in detail) clamping fluid, (can pressurize gas
Body, especially compressed air can pressurized hydraulic fluid especially hydraulic oil), for activating fixed or clamping and/or phase
The fixation such as scroll chuck or the like answered or clamping element.
In this example, rotary table 1 is by the revolution work with electromagnetic driver 3 or the direct drive of torque motor
Platform 1 is formed, and wherein electromagnetic driver 3 has multiple permanent magnets 4 along the circumferential directions of rotor unit 5, and also has
The electromagnetic drive coil 6 of (only showing schematically) stator unit 7.In this example, roughly or very schematically show very much
Electromagnetic driver 3 or electric motor 3 are gone out, because the Direct Driving System of rotary table 1 or torque motor are herein
It is known part.
In the accompanying drawings, clearly show, electric motor 3 have radial directed diameter D, diameter D be more than electric motor 3 or
The length L of the axial orientation of person's permanent magnet 4 and/or driving coil 6.(driver 3 and/or platen 2) diameter D can also be constructed
Into for example bigger 2 to 5 times than (permanent magnet 4 and/or driving coil 6 and/or rotary table housing 20) length L or big more
More times.
Moreover, rotation axis R is shown in the drawings, rotor unit 5 can surround rotation axis R and rotate.In order to clear
For the sake of, in the accompanying drawings, the shade wire tag of rotor unit 5 or its rotate element/part from upper right side to lower left.Compare
Under, shade wire tag of the stationary parts/element from upper left side to lower right of stator unit 7 or rotary table 1.
As can be seen here, clutch shaft bearing 8 has static outer race and rotatable inside race, and also has as rolling
Multiple balls of element.In this example, clutch shaft bearing 8 is made up of the axial thrust ball bearing with two raceways, Huo Zhe
One bearing 8 is advantageously configured to double end thrust ball bearing.In addition it can be clearly seen that clutch shaft bearing 8 is with bigger
Bearing diameter.That is, clutch shaft bearing 8 has the bearing diameter bigger than second bearing 9, in this example, second bearing 9 constructs
Into the cylinder ball bearing with multiple cylinders as rolling element.
Therefore, clutch shaft bearing 8 either axial thrust ball bearing 8 and second bearing 9 or cylinder ball bearing 8 it
Between, radially (i.e. perpendicular to or be orthogonal to rotation axis R) is provided with favourable radial clearance A.
In the illustrative embodiment being shown in the drawings, in addition, also between clutch shaft bearing 8 and second bearing 9 vertically
Direction or rotation axis R direction set axial gap B.In particularly advantageous improvement (not shown), two solely
Vertical bearing 8, bearing 9 (i.e. clutch shaft bearing 8 and second bearing 9) are overlapping in rotation axis R axial direction, so as at the two
Overlapping bearing 8, the axial direction of bearing 9 do not form and/or formed negative axial gap B., the latter of this Bearing configuration
It is special section space-efficient to deform in the rotary table according to the present invention, so as to rotary table can have it is especially small/
Short axial overall length.
Because second bearing 9 or cylinder ball bearing 9 have favourable relatively small bearing diameter, so according to this hair
Bright rotary table can realize of a relatively high rotating speed (preferably greater than 1000 revs/min) without mounting seat, especially
It is under cylinder ball bearing 9 overloads or may damaged.
By means of the favorable structure of two spaced bearings 8,9, rotary table 1 or platen 2 have especially
Big axially and radially rigidity.Therefore, rotary table 1 can be employed flexibly for turning and milling machine operation, and here not only
High rotation speed can be realized, and high rigidity and the high accuracy of therefore high processing can be realized.
In the case where not being shown specifically, outside 10 or surface outside stator 6 can set cooling system, especially
It is liquid-cooling system, especially either to cool down electric motor 3 or electromagnetic driver 3 from stator side from outside.
Advantageously, with reference to the accompanying drawings 1 and the rotary table 1 of accompanying drawing 2 there is rotor unit 5 or its rotary part in addition
Favourable " inside " cooling, i.e., from coming from center/middle rotation axis R side/direction.Therefore, rotary table 1 or
Rotor 5 advantageously has feed line 11 and discharge pipe line 12, so as to which cooling medium (preferably cooling liquid) is provided to rotor 5
Removed with from rotor 5.
By means of favourable rotation feedthrough component 13, cooling medium is guided to the first ring via at least one following current pipeline 14
Shape pipeline 15.
Flowing backward through for the favourable internal cooling of rotary table 1 or rotor 5 is carried out by the second circulating line 16, and this
Second ring pipeline 16 is via at least one reflux line 17 guiding to rotation feedthrough component 13 and discharge tube 12.
Around the rotation axis R of rotor unit, (i.e. 360 °) extend two circulating lines 15 and 16 substantially completely.Thus
Ensure cooling medium (particularly cooling liquid) around rotation axis R (i.e. in first annular pipeline 15) comprehensively or symmetrically
Ground distributes, and is collected by the second circulating line 16, and can flow to/away from rotation feedthrough component 13.
In Fig. 1, schematically show only in following current pipeline 14 and reflux line identical or on shown section
17.This is provided merely as schematic diagram, because in practice, but, two following current pipelines 14 are set respectively in embodiment, and this two
Individual following current pipeline 14 offsets 180 °, i.e., symmetrically constructs on for example shown section, and arranges two in this embodiment
Reflux line 17, the two reflux lines 17 relative to 90 ° of this following current Plane Rotation and are arranged on back around rotation axis R
It is favourable in this embodiment in plane of flow.It means that such as can be seen from Figure 3, from top with revolution work from cross section
Platform 1, the following current pipeline 14 for offseting/being rotated by 90 ° respectively correspondingly replace with reflux line 17 herein.It is it is thereby achieved that all suitable
The symmetric construction in flow tube road 14 and reflux line 17, and therefore avoid the imbalance of rotary table 1 or internal cooling.
In fig 2, rotary table 1 is shown in the second section, two of which cooling or distribution duct 18 are
It is visible.Therefore accompanying drawing 2 shows cooling medium (particularly cooling fluid) from first annular pipeline 15 respectively via distribution pipe
Road 18 flows to second " bottom " circulating line 16 (from Vertical Square always from).Therefore, in fig 2, in passing equally attached
In Fig. 1, the flow direction of cooling liquid is schematically illustrated with arrow.
Preferably, multiple (such as 12 or 24 specifically symmetrically and/or with star shape are disposed with around rotation axis R
It is individual) cooling pipe 18 or distribution duct 18.Therefore, be ensure that by cooling pipe 18 or distribution duct 18 in circumferential direction
Uniform cooling and avoid imbalance.
In fig 2, the limiting unit 19 in the end regions of distribution duct 18 is shown in addition.For example, such limit
Portion 19 processed can be implemented as being fitted in practice the stud screw with centre bore in distribution duct 18.By means of limitation
The reduction of the cross section of portion 19 or the hole by means of stud screw, it is advantageous to can highly precisely regulation distribution respectively
Pressure or flow in pipeline 18.In addition, by means of limiting unit 19 or the accurate construction in the hole of corresponding stud screw,
Realize the uniform pressure regulation in whole cooling pipes 18 or distribution duct 18.Which ensure that rotary table 1
Rotary part or rotor 5 uniformly cool down from " inside ", and it is ensured that uniform temperature adjustment.
Preferably, the closure cooling circuit of cooling medium is realized.That is, it is preferred that in the cooling circuit of closure,
Such as by means of favourable pump or pressure generating unit, by cooling medium (particularly cooling fluid) via service 11,
It is introduced to via rotation feedthrough component 13 in rotor 5, and rotation is returned again to via circulating line 15,16 and distribution duct 18
Feedthrough component 13, and guided from rotary table 1 to pump and/or media reservoir by reflux pipeline or discharge pipe line 12 or
Person's liquid memory and/or at least one heat exchange elements.
In the case where not being shown specifically, electromagnetic driving system 3 or electric motor 3 are in the " outer of outer circumferential surface 10
" outside " of portion's cooling " and installation (particularly bearing 8) can but be realized outside.Therefore, can be realized favorably according to the present invention
Outwardly and inwardly cooling, and therefore realize comprehensive or uniform temperature adjustment of almost whole rotary table 1.This is true
Protect using the extra high precision in being processed according to the rotary table 1 of the present invention.
Particularly in figure 3, schematically illustrate and be combined with radial direction cooling pipe 18 or radial directed part 21
Circulating line 15,16 arrangement, wherein, part 21 be preferably arranged in perpendicular to/be orthogonal to rotation axis orientation plane
Or even surface (i.e. in this example in the plane of the page).In order to preferably describe according to the present invention rotor unit 5 or
Substantially through-flow, particularly the flowing in and out from cooling pipe 18 or the entry/exit of radial component 21 of person's rotary table, cools down
The exemplary flow arrow of medium individually represents herein.
The rotary table according to the present invention being shown in the drawings has at rotary table (particularly rotor unit)
The uniform temperature of circumferencial direction.Here by absorbing heat, on the one hand (notable) change of the temperature of cooling medium occurs
In circulating line 15,16 (during the inflow/outflow of pipeline 15,16 and distribution), and especially, on the other hand, approximately along
The cooling pipe 18 or part 21 of radial directed occur.
Therefore, according to shown variant of the invention, temperature change/growth in circumferencial direction without correlation, but
Substantially only in the radial direction.Thus the undesirable change of rotation axis orientation is advantageously avoid, and therefore, in workpiece
In processing or according to the present invention the lathe with rotary table operation in extra high quality.
List of numerals：
1 rotary table
2 platens
3 motors
4 permanent magnets
5 rotors
6 coils
7 stators
8 bearings
9 bearings
10 outsides
11 pipelines
12 pipelines
13 rotation feedthrough components
14 pipelines
15 circulating lines
16 circulating lines
17 pipelines
18 pipelines
19 limiting units
20 rotary table housings
21 parts
A gaps
B gaps
D diameters
L length
R rotation axis
Claims (10)
1. a kind of rotary table (1) for lathe, wherein, provided with stator unit (7) and can be at least about rotation axis
(R) rotor unit (5) of rotation, wherein, the rotor unit (5) includes being used at least one receiving unit for receiving workpiece
(2), wherein (7) are provided with clutch shaft bearing unit (8,9) for the peace of the rotor unit (5) in the stator unit
Dress, wherein, motorized motions of the electromagnetic motor driver device (3) for the rotor unit (5) are set, it is characterised in that described
Rotor unit (5) at least has at least one rotor in the region of motor driver (3) or the clutch shaft bearing unit (8,9)
Cooling device (14-19) comes from the motor driver (3) and/or the clutch shaft bearing list for cooling down and/or absorbing
The used heat of first (8,9), the rotor cooling device (14-19) include cooling medium and at least one cooling surface.
2. rotary table according to claim 1, it is characterised in that be provided with least second bearing unit (8,9) with
For the installation of the rotor unit (5), wherein, in the clutch shaft bearing unit (8,9) and the second bearing unit (8,9)
Between be provided with gap (A, B).
3. rotary table according to any one of the preceding claims, it is characterised in that in the axial direction along institute
State rotation axis (R) observation and/or observed in radial directions transverse to the rotation axis (R), the rotor cooling device
(14-19) has at least one circulating line (15,16), and the circulating line (15,16) is arranged in the clutch shaft bearing unit
Substantially extend between (8,9) and second bearing unit (8,9) and/or the motor driver (3) and in whole circumference, with
Distribution and collection for cooling medium.
4. rotary table according to any one of the preceding claims, it is characterised in that be provided with multiple cooling pipes
(14-18) and/or cooling element (14-18), the cooling pipe (14-18) and/or cooling element (14-18) have extremely respectively
A few cooling surface and at least in part circumferentially distribution/arrangement.
5. rotary table according to any one of the preceding claims, it is characterised in that cooling pipe (14-18) and/
Or cooling element (14-18) has the part (21) of at least one substantially radial orientation respectively.
6. rotary table according to any one of the preceding claims, it is characterised in that cooling pipe (14-18) and/
Or the part (21) of the approximately radial orientation of cooling element (14-18) is approximately perpendicular to the rotation axis (R) and/or at one
Arranged in plane.
7. rotary table according to any one of the preceding claims, it is characterised in that cooling pipe (14-18) and/
Or the part (21) of the approximately radial orientation of cooling element (14-18) is arranged in first annular pipeline (15) and the second circulating line
(16) between, the first annular pipeline (15) be configured to distribute circulating line (15) for by the cooling medium distribute into
Enter the part (21), second circulating line (16) is configured to collect circulating line (16) for from the part (21)
Collect the cooling medium.
8. rotary table according to any one of the preceding claims, it is characterised in that cooling pipe (14-19) and/
Or in cooling element (14-18) it is at least one have at least one pressure control valve (19) for control it is described cooling be situated between
The pressure of matter.
9. the rotary table according to any one of the preceding claims for lathe, it is characterised in that the revolution
Workbench (1) is configured to rotate circular table.
10. one kind has the lathe of rotary table according to any one of the preceding claims (1).
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE102015110780.5 | 2015-07-03 | ||
| DE102015110780 | 2015-07-03 | ||
| PCT/EP2016/065373 WO2017005610A1 (en) | 2015-07-03 | 2016-06-30 | Turntable for a machine tool |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107848089A true CN107848089A (en) | 2018-03-27 |
| CN107848089B CN107848089B (en) | 2021-01-08 |
Family
ID=56345117
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201680039495.6A Active CN107848089B (en) | 2015-07-03 | 2016-06-30 | Rotary table for machine tool |
Country Status (6)
| Country | Link |
|---|---|
| US (1) | US10744610B2 (en) |
| EP (1) | EP3317045B1 (en) |
| CN (1) | CN107848089B (en) |
| DE (1) | DE102016112025A1 (en) |
| ES (1) | ES2770863T3 (en) |
| WO (1) | WO2017005610A1 (en) |
Cited By (5)
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|---|---|---|---|---|
| CN112425047A (en) * | 2018-04-20 | 2021-02-26 | 雷诺股份公司 | Device for cooling an electric machine and electric machine comprising such a device |
| CN114505696A (en) * | 2022-03-15 | 2022-05-17 | 江苏恒望机械科技有限公司 | Rotary table bearing device |
| CN114728387A (en) * | 2019-11-20 | 2022-07-08 | 山崎马扎克公司 | Table rotating device and machine tool |
| CN115195035A (en) * | 2021-04-01 | 2022-10-18 | 恩格尔奥地利有限公司 | Rotary equipment for forming machines |
| CN119388223A (en) * | 2025-01-02 | 2025-02-07 | 山东豪迈数控机床有限公司 | Revolving stage cooling structure |
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| DE102018006304A1 (en) * | 2018-08-10 | 2020-02-13 | Sauter Feinmechanik Gmbh | Device for generating a clamp |
| CN110449922B (en) * | 2019-07-09 | 2021-03-12 | 科德数控股份有限公司 | Nested formula numerical control revolving stage |
| US12215693B2 (en) | 2020-01-09 | 2025-02-04 | Gates Corporation | Permanent magnet rotor for an axial flux motor |
| CN113043031B (en) * | 2021-03-25 | 2022-06-10 | 山东豪迈机械科技股份有限公司 | Numerical control machine tool turntable |
| DE102022123554A1 (en) * | 2022-09-14 | 2024-03-14 | HPL Technologies GmbH | Convection device for a work table, and a cooling method for a workpiece |
| DE102022131884A1 (en) * | 2022-12-01 | 2024-06-06 | P&L Gmbh & Co. Kg | Machine tool with cooling device |
| GB202301834D0 (en) * | 2023-02-09 | 2023-03-29 | Fives Landis Ltd | Thermal distortion in machine tools |
| CN118455556B (en) * | 2024-07-10 | 2024-09-06 | 齐重数控装备(江苏)有限公司 | Automatic numerical control lathe capable of reducing transmission noise |
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| CN112425047A (en) * | 2018-04-20 | 2021-02-26 | 雷诺股份公司 | Device for cooling an electric machine and electric machine comprising such a device |
| CN114728387A (en) * | 2019-11-20 | 2022-07-08 | 山崎马扎克公司 | Table rotating device and machine tool |
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Also Published As
| Publication number | Publication date |
|---|---|
| WO2017005610A1 (en) | 2017-01-12 |
| CN107848089B (en) | 2021-01-08 |
| US20180133857A1 (en) | 2018-05-17 |
| EP3317045A1 (en) | 2018-05-09 |
| US10744610B2 (en) | 2020-08-18 |
| EP3317045B1 (en) | 2019-11-13 |
| ES2770863T3 (en) | 2020-07-03 |
| DE102016112025A1 (en) | 2017-01-05 |
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